Is this vulnerability remotely exploitable?

Yes. The vulnerability is triggered over HTTP through the /admin/tools.php endpoint, so an attacker who can reach this endpoint and control the host parameter can attempt remote exploitation.

Does an attacker need to be authenticated to exploit this?

It depends on how the CMS is deployed. If /admin/tools.php is protected by authentication and access controls, an attacker would typically need valid credentials or another way to bypass authentication. If it is exposed without proper protection, exploitation could be possible without authentication.

What is the safest general fix pattern?

The safest approach is to remove direct shell command usage for host-based operations and replace it with high-level language APIs or libraries. Where commands must remain, use argument-safe execution APIs, strict allowlist validation for host, and avoid any string-based command concatenation.

Severity:

HIGH RISK

(7.3)

Command Injection via Host Parameter (CWE-77) in DefaultFuction CMS /admin/tools.php

CVE-2026-5333

Published:

Apr 2, 2026

Status:

Undergoing Analysis

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Command Injection

CWE:

CWE-74;CWE-77

Impact:

Remote Code Execution on the Server

Severity:

HIGH RISK

(7.3)

CVSS Version:

3.1

Vulnerability Type

Category:

Command Injection

CWE:

CWE-74;CWE-77

Impact:

Remote Code Execution on the Server

Severity:

HIGH RISK

(7.3)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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Ask AI for summary of CodeAnt

Command Injection via Host Parameter (CWE-77) in DefaultFuction CMS /admin/tools.php

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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